stuck in redirect loop (4 posts)

The links on my blog to view older stories have suddenly stopped working. The URL I am using is example.com/page/2 (for the second page), but I tried example.com/?paged=2 too and that fails.

Firefox reports that 'the page isn't redirecting properly', and when I look at the HTTP traffic, I see that the web server is returning a 301 , with the redirect URL as example.com/page/2 (so exactly the same as the URL I'm entering)